ONU Uplink Rate Allocation for PON Timeslot Efficiency
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Solution Overview
Problem
In passive optical networks, existing methods for upstream transmission resource allocation lead to inefficiencies due to the allocation of short timeslots for ONUs with high transmission rates, resulting in wasted resources.
Innovation Solution
An OLT determines an upstream rate threshold based on transmission quality information and allocates an upstream transmission timeslot and rate to each ONU, ensuring the rate does not exceed the threshold, thereby optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the OLT allocates upstream transmission timeslot based on specified upstream transmission rate to ensure each ONU has long enough timeslot, then transmission reliability is improved, but upstream transmission resource efficiency deteriorates
Solution Approach 1:
The patent applies dynamics by making the upstream transmission rate adjustable rather than fixed. The OLT dynamically adjusts the upstream transmission rate of each ONU based on real-time transmission quality feedback, allowing the system to adapt between reliability and efficiency requirements. When transmission quality is good, higher rates are used for efficiency; when quality degrades, rates are reduced to maintain reliability.
Solution Approach 2:
The patent changes the parameter of upstream transmission rate from a static specified value to a dynamic value that varies based on transmission quality. The OLT monitors transmission quality metrics and adjusts the transmission rate parameter accordingly, enabling the system to optimize resource allocation while maintaining reliable transmission under varying channel conditions.
2Stability of the object's composition
If the OLT uses a relatively low specified upstream transmission rate to ensure long enough timeslot for each ONU, then transmission stability is improved, but upstream transmission resource utilization deteriorates
Solution Approach 1:
The system transitions from static rate allocation to dynamic rate adjustment. The OLT continuously monitors transmission quality and adjusts the upstream transmission rate in real-time, allowing the system to maintain stability when needed while avoiding resource waste when channel conditions permit higher rates.
Solution Approach 2:
The upstream transmission rate parameter is changed from a fixed low value to a variable value that adapts to transmission quality conditions. This allows the system to use higher rates when transmission quality is good (reducing resource waste) while maintaining low rates when quality is poor (preserving stability).
Data Source
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AI summary
Embodiments of this application disclose an upstream transmission resource allocation method and a related device, to effectively avoid a waste of upstream transmission resources. The method in embodiments of this application includes the following steps: First, an OLT determines an upstream rate threshold of an ONU based on transmission quality information of upstream data sent by the ONU. It should be understood that the upstream rate threshold of the ONU is less than or equal to a maximum sending rate that can be supported by the ONU in a current status. In different channel conditions, the ONU has different upstream transmission quality. The upstream transmission quality directly affects the maximum sending rate that can be currently supported by the ONU. The OLT further obtains a to-be-transmitted data amount of the ONU. Then, the OLT determines an upstream transmission timeslot of the ONU and an upstream transmission rate of the ONU. The upstream transmission rate of the ONU is less than or equal to the upstream rate threshold. The ONU is configured to send data of the to-be-transmitted data amount to the OLT in the upstream transmission timeslot based on the upstream transmission rate.